Use the database tables below to answer the following questions. 
-Which table's primary key has a composite primary key?
Definitions:
Advertising
The activity or profession of producing advertisements for commercial products or services.
Internet Business Model
A strategy outlining how an online business will create value, serve customers, and generate revenue through the Internet.
Strategy/Environment Fit
The alignment between a company's strategies and its external environment to ensure effectiveness.
Long-Term Earnings Growth
A measure of a company's ability to increase its earnings over a prolonged period, often considered a key indicator of financial health and future potential.
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